A touch sensor module according to an embodiment of the present invention includes a touch sensor layer including sensing electrodes and traces branching from the sensing electrodes, a flexible circuit board electrically connected to the traces at one end portion of a top surface of the touch sensor layer, a supporting structure commonly and partially covering the flexible circuit board and the touch sensor layer, and an adhesive layer formed on at least one surface of the touch sensor layer. The adhesive layer has a flexural rigidity in a range from 0.01 to 5 N·nm. Damages and delamination of electrodes and wirings included in the flexible circuit board and the touch sensor layer are prevented by the supporting structure.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The touch sensor module according to claim 1, wherein the adhesive layer comprises a second adhesive layer formed on a bottom surface of the touch sensor layer.
3. The touch sensor module according to claim 2, further comprising a protective film combined with the touch sensor layer via the second adhesive layer.
5. The touch sensor module according to claim 1, wherein the adhesive layer has the flexural rigidity in a range from 0.1 to 1 N·nm.
6. The touch sensor module according to claim 1, wherein the touch sensor layer comprises a display area in which the sensing electrodes are disposed, a trace area in which the traces are disposed, and a connection area in which terminal end portions of the traces are disposed.
7. The touch sensor module according to claim 6, wherein the flexible circuit board is electrically connected to the terminal end portions of the traces in the connection area, and the supporting structure covers the connection area and the trace area in a planar view.
8. The touch sensor module according to claim 7, wherein the touch sensor layer further comprises a margin area in which some of the sensing electrodes are arranged, and the margin area is interposed between the display area and the trace area.
9. The touch sensor module according to claim 8, wherein the supporting structure covers the margin area in the planar view.
11. The touch sensor module according to claim 10, wherein a spacing distance between the optical layer and the supporting structure is 500 μm or less.
12. The touch sensor module according to claim 10, wherein the optical layer includes at least one of a polarizer, a polarizing plate, a retardation film, a reflective sheet, a brightness enhancing film or a refractive index matching film.
13. The touch sensor module according to claim 1, wherein the supporting structure comprises a substrate layer and a supporting layer formed on the substrate layer, and the supporting layer includes an adhesive material.
14. The touch sensor module according to claim 13, wherein the supporting layer contacts the flexible circuit board and the touch sensor layer.
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December 10, 2020
August 2, 2022
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